Precision Measurement of $\sin^{2}(2\theta_{13})$ and $|\Delta m^{2}_{ee}|$ from Daya Bay

Ling, Jiajie

doi:10.22323/1.282.0467

Cited by 5 publications

(7 citation statements)

References 6 publications

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“…However, since these experiments are not sensitive to θ 12 (see probability expressions in [74]), we consider an external Gaußian prior of 0.7% (at 1σ) on sin 2 θ 12 as expected from the proposed JUNO experiment [75]. Even though both DUNE and T2HK can provide high precision measurement of θ 13 using their appearance channels, but to speed up our computation, we also apply a Gaußian prior of 3% (at 1σ) on sin 2 θ 13 as expected by the end of Daya Bay's run [76]. Fig.…”

Section: Discussionmentioning

confidence: 99%

“…We also marginalise over test sin 2 θ 13 in its present 3σ allowed range of 0.019 to 0.024. While doing so, we apply an external Gaußian prior of 3% (at 1σ) on this parameter expecting that the Daya Bay experiment would be able to achieve this precision by the end of its run [76]. Both DUNE and T2HK can measure θ 13 with high precision using ν µ → ν e andν µ →ν e oscillation channels and therefore, the prior on θ 13 is not very crucial in our study (see Fig.…”

Section: Details Of Statistical Analysismentioning

confidence: 97%

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Addressing neutrino mixing models with DUNE and T2HK

et al. 2018

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We consider schemes of neutrino mixing arising within the discrete symmetry approach to the well-known flavour problem. We concentrate on 3ν mixing schemes in which the cosine of the Dirac CP violation phase δ CP satisfies a sum rule by which it is expressed in terms of three neutrino mixing angles θ 12 , θ 23 , and θ 13 , and a fixed real angle θ ν 12 , whose value depends on the employed discrete symmetry and its breaking. We consider five underlying symmetry forms of the neutrino mixing matrix: bimaximal (BM), tri-bimaximal (TBM), golden ratio A (GRA) and B (GRB), and hexagonal (HG). For each symmetry form, the sum rule yields specific prediction for cos δ CP for fixed θ 12 , θ 23 , and θ 13 . In the context of the proposed DUNE and T2HK facilities, we study (i) the compatibility of these predictions with present neutrino oscillation data, and (ii) the potential of these experiments to discriminate between various symmetry forms.

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Section: Discussionmentioning

confidence: 99%

Section: Details Of Statistical Analysismentioning

confidence: 97%

Addressing neutrino mixing models with DUNE and T2HK

et al. 2018

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“…7 we present results of statistical analysis of the predictions for cos δ , namely the likelihood function versus cos δ within the Gaussian approximation (see [96] for details) performed using the b.f.v. of the mixing angles given in Table 1 and the prospective 1σ uncertainties i) of 0.7% on sin 2 θ 12 , planned to be reached in JUNO experiment [119], ii) of 3% on sin 2 θ 13 , foreseen to be obtained in the Daya Bay experiment [131], and iii) of 3% on sin 2 θ 23 , expected to be reached in the currently running and future planned long baseline neutrino oscillation experiments [117,120,122]. The BM (LC) case is very sensitive to the b.f.v.…”

Section: Neutrino Theorymentioning

confidence: 94%

“…Statistical analysis of these 14 cases was performed in [98] using the b.f.v. of the three neutrino mixing parameters sin 2 θ i j from [19] and taking into account the prospective (1σ ) uncertainties in the determination of the mixing angles, planned to be achieved in currently running (Daya Bay [131]) and the next generation (JUNO [119], T2HK [120], DUNE [122]) of neutrino oscillation experiments: 3% on sin 2 θ 13 [131], 0.7% on sin 2 θ 12 [119] and 3% on sin 2 θ 23 [122,120]. This analysis revealed that only six cases would be compatible with the indicated prospective data from the Daya Bay, JUNO, T2HK, DUNE experiments.…”

Section: Neutrino Theorymentioning

confidence: 99%

Neutrino Theory

Petcov¹

2019

Proceedings of the 39th International Conference on High Energy Physics — PoS(ICHEP2018)

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The possible manifestations of New Physics beyond that predicted by the Standard Theory, which can be related to the existence of non-zero neutrino masses and neutrino mixing, are briefly discussed. The phenomenology of 3-neutrino mixing, the present status of our knowledge about the 3-neutrino mixing parameters, including the absolute neutrino mass scale, and of the Dirac and Majorana CP violation in the lepton sector, are summarised. The current theoretical ideas about the origins i) of neutrino masses and of the enormous disparity between their values and the values of the charged lepton and quark masses, and ii) of the pattern of neutrino mixing revealed by the neutrino oscillation experiments, are reviewed, with the non-Abelian discrete symmetry approach considered in somewhat greater detail. The possibilities to test these ideas are also briefly discussed.-In the Majorana nature of massive neutrinos, and total lepton charge non-conservation, L = const.-In the existence of new particles, e.g., at the TeV scale: heavy Majorana neutrinos N j , doubly and singly charged scalars, H −− , H − , etc. -In the existence of new (flavour changing and/or flavour conserving but flavour non-symmetric) nonstandard neutrino interactions (NSI) [6,7] (for recent discussions see, e.g., [8,9,10]). -In the existence of charged lepton flavour violating (ChLFV) processes, µ → e + γ and µ → 3e decays, µe conversion on nuclei, etc., having rates close to the existing stringent upper limits. -In the existence of unforeseen new phenomena.Apart obviously from the last item, the indicated possible manifestations of New Physics were extensively discussed at this Conference.There can be more than 3 massive neutrinos, n > 3, for example, if there exist sterile righthanded (RH) neutrinos νl R and left-handed (LH) antineutrinosνl L (described by SU (2) ×U (1) Y W singlet RH neutrino fields νl R (x)), which posses a Majorana mass term and couple via a Dirac mass term to the active flavour LH neutrinos ν lL and RH antineutrinosν lR (LH flavour neutrino fields ν lL (x)). In what concerns the masses of the additional massive neutrino states ν 4 , ν 5 ,..., m 4 , m 5 ,..., there are a few possibilities. i) They can be at the eV scale, m 4 , m 5 , ... ∼ 1 eV. In this case active-sterile neutrino oscillations, ν e(µ) → ν s (≡νl L ) are possible. At present we have hints that such oscillations might take place from LSND and MiniBooNE experiments, re-analyses of short baseline (SBL) reactor neutrino oscillation data ("reactor neutrino anomaly") and data of radioactive source calibration of the solar neutrino SAGE and GALLEX experiments "Gallium anomaly") (see, e.g., [11]). However, as recent analyses have shown [11,12], the global fits of the relevant data -positive evidence and negative results -have an extremely low quality, indicating the existence of inconsistencies between the different data sets.

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“…These uncertainties are foreseen to be further reduced by the currently active and/or future planned experiments. The Daya Bay collaboration plans to determine sin 2 θ 13 with 1σ uncertainty of 3% [45]. The uncertainties on sin 2 θ 12 and sin 2 θ 23 are planned to be reduced significantly.…”

Section: Jhep12(2017)022mentioning

confidence: 99%

Neutrino mixing and leptonic CP violation from S4 flavour and generalised CP symmetries

Penedo

Petcov

Titov

2017

J. High Energ. Phys.

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We consider a class of models of neutrino mixing with S 4 lepton flavour symmetry combined with a generalised CP symmetry, which are broken to residual Z 2 and Z 2 × H ν CP symmetries in the charged lepton and neutrino sectors, respectively, H ν CP being a remnant CP symmetry of the neutrino Majorana mass term. In this set-up the neutrino mixing angles and CP violation (CPV) phases of the neutrino mixing matrix depend on three real parameters -two angles and a phase. We classify all phenomenologically viable mixing patterns and derive predictions for the Dirac and Majorana CPV phases. Further, we use the results obtained on the neutrino mixing angles and leptonic CPV phases to derive predictions for the effective Majorana mass in neutrinoless double beta decay.

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Precision Measurement of $\sin^{2}(2\theta_{13})$ and $|\Delta m^{2}_{ee}|$ from Daya Bay

Cited by 5 publications

References 6 publications

Addressing neutrino mixing models with DUNE and T2HK

Addressing neutrino mixing models with DUNE and T2HK

Neutrino Theory

Neutrino mixing and leptonic CP violation from S4 flavour and generalised CP symmetries

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